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Finding the Fourth Proportional to 75,413.88, 104,086.35 and 43,578.45

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Solution

The fourth proportional to 75,413.88, 104,086.35 and 43,578.45 is: 60,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,413.88 : 104,086.35 = 43,578.45 : x
  2. Step 2: Convert to fraction form
    75,413.88/104,086.35 = 43,578.45/x
  3. Step 3: Cross multiply
    75,413.88x = 104,086.35 × 43,578.45
  4. Step 4: Simplify right side
    75,413.88x = 4,535,921,799.16
  5. Step 5: Solve for x
    x = 4,535,921,799.16/75,413.88
  6. Step 6: Final answer
    x = 60,147.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.